1157157 has 24 divisors (see below), whose sum is σ = 1803360. Its totient is φ = 712800.

The previous prime is 1157131. The next prime is 1157159. The reversal of 1157157 is 7517511.

It is a de Polignac number, because none of the positive numbers 2^k-1157157 is a prime.

It is an Ulam number.

1157157 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1157157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11407 + ... + 11507.

It is an arithmetic number, because the mean of its divisors is an integer number (75140).

2^1157157 is an apocalyptic number.

It is an amenable number.

1157157 is a deficient number, since it is larger than the sum of its proper divisors (646203).

1157157 is a wasteful number, since it uses less digits than its factorization.

1157157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 190 counting only the distinct ones).

The product of its digits is 1225, while the sum is 27.

The square root of 1157157 is about 1075.7123221382. The cubic root of 1157157 is about 104.9858484329.

It can be divided in two parts, 11571 and 57, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 1157157 in words is "one million, one hundred fifty-seven thousand, one hundred fifty-seven".